also, a VERY large craft could be launched using Zeropto, and once it reaches orbit, open up solar array, and fire up ION drive

Zeropto is just to get to orbit using mainly on ground assests..

Again, you're referring to catch phrases like "Zero Propellant to Orbit" like something we have, when we don't. We don't have the tools to make the tools to make one, and until we do, we have no way of knowing what properties it will have, such as what scale it will work efficiently at.

_________________"You can't have everything, where would you put it?" -Steven Wright.

I've been half-reading these threads, but without any indication of whether the physics needed is even within an order of magnitude of physical reality, this is not even science fiction, it's fantasy. Here's a challenge: pick one of your ideas, give us some numbers and references, and show that it's at least within the realm of physical reality, even if we don't have the technology to build it and it wouldn't be economically feasible to do so. I know that that's more difficult than idly spouting buzzwords, but if you fancy yourselves engineers, do some engineering!

_________________Say, can you feel the thunder in the air? Just like the moment ’fore it hits – then it’s everywhereWhat is this spell we’re under, do you care? The might to rise above it is now within your sphereMachinae Supremacy – Sid Icarus

Flick a bic. See that visual part of the flame? That's plasma. Now, that's a "Dirty" plasma, because it's made up of all the ionized elements of burnt/burning butyl alcohol, and the air it's mixing with, so, if you wanted to control it with microwaves, you'd have to use different frequencies matching the ever changing soup of the plasma you created, while it was expanding, and presumably your craft is heading through it with a supersonic bow shock wave. It won't work, get over it.

Posting equations with multiple variables, but no numbers is not math, it's cut&paste off of wikipedia. How much does your craft weigh? How fast is it moving? These are quantities you need for any equation, even the relatively simple Momentum one. What's it's drag co-efficient? This is a constant decelleration, which constantly lowers your velocity, which the momentum of the ship is based off of.

Momentum is what keeps you in orbit, it doesn't accellerate you to it. Orbit isn't a place, it's a vector perpendicular to the atmosphere, which means you can't launch your ship straight up to orbit, you would have to fire it diagonally through it in a curve that maximizes the drag you're saying would propel the ship. The equations don't work if you substitute the wrong numbers for the wrong factors, either. This isn't real math, it's fantasy.

_________________"You can't have everything, where would you put it?" -Steven Wright.

Momentum is m*v, kinetic energy is 1/2*m*v^2. Also, you're saying that some kind of energy (not sure where it's coming from) is stored as momentum, but that the craft doesn't accelerate. So, what, it's getting heavier?

_________________Say, can you feel the thunder in the air? Just like the moment ’fore it hits – then it’s everywhereWhat is this spell we’re under, do you care? The might to rise above it is now within your sphereMachinae Supremacy – Sid Icarus